EP3340664A1 - Verfahren und netzwerkvorrichtung zur herstellung eines drahtlosträgers - Google Patents

Verfahren und netzwerkvorrichtung zur herstellung eines drahtlosträgers Download PDF

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Publication number
EP3340664A1
EP3340664A1 EP15903806.6A EP15903806A EP3340664A1 EP 3340664 A1 EP3340664 A1 EP 3340664A1 EP 15903806 A EP15903806 A EP 15903806A EP 3340664 A1 EP3340664 A1 EP 3340664A1
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EP
European Patent Office
Prior art keywords
terminal
network device
voice
voice quality
codec scheme
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
EP15903806.6A
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English (en)
French (fr)
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EP3340664A4 (de
Inventor
Shiguo Guan
Ming Li
Dingzhang Dai
Jian Li
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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Publication date
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Publication of EP3340664A1 publication Critical patent/EP3340664A1/de
Publication of EP3340664A4 publication Critical patent/EP3340664A4/de
Ceased legal-status Critical Current

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/18—Information format or content conversion, e.g. adaptation by the network of the transmitted or received information for the purpose of wireless delivery to users or terminals
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
    • G10L19/00—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis
    • G10L19/04—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis using predictive techniques
    • G10L19/16—Vocoder architecture
    • G10L19/18—Vocoders using multiple modes
    • G10L19/24—Variable rate codecs, e.g. for generating different qualities using a scalable representation such as hierarchical encoding or layered encoding
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • H04L65/60—Network streaming of media packets
    • H04L65/75—Media network packet handling
    • H04L65/765—Media network packet handling intermediate
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup

Definitions

  • the present invention relates to the communications field, and in particular, to a method for setting up a radio bearer, and a network device.
  • Adaptive Multi-Rate is a speech codec scheme used in communication and is specifically divided into adaptive multi-rate narrowband codec (Adaptive Multi-Rate Narrowband, AMR-NB for short) and adaptive multi-rate wideband codec (Adaptive Multi-Rate Wideband, AMR-WB for short).
  • AMR-NB adaptive Multi-rate narrowband codec
  • AMR-WB adaptive multi-rate wideband codec
  • AMR-NB a voice signal with a frequency bandwidth ranging from 300 HZ to 3400 HZ is generated by using an 8KHz voice sampling frequency; and for AMR-WB, a voice signal with a frequency bandwidth ranging from 50 HZ to 7 KHz is generated by using a 16KHZ sampling frequency.
  • AMR-WB a voice signal with a frequency bandwidth ranging from 50 HZ to 7 KHz is generated by using a 16KHZ sampling frequency.
  • AMR-WB can provide high-definition voices for a user.
  • a process of implementing a voice service it is required that all logical functional entities (for example, a core network, an access network, and a terminal) in an end-to-end link are capable of providing the AMR-WB voice service, so that an AMR-WB radio bearer can be set up to provide a high quality voice service. Therefore, quality of the voice service depends on a device that has a lowest voice service codec capability in a system.
  • a terminal at only one end provides the AMR-WB voice service while other devices provide only an AMR-NB voice service
  • a service capability is restricted, only a radio bearer for the AMR-NB voice service can be set up between the terminals, and both the two parties in communication use AMR-NB to implement a low quality voice service. Therefore, a user of the terminal that has an AMR-WB capability cannot experience a high-definition voice. As a result, user experience of the terminal is inconsistent with the capability of the terminal, and user experience is poor.
  • the present invention provides a method for setting up a radio bearer and a network device, implementing that a user of a terminal that is capable of providing a high-quality codec capability can experience a high-definition voice service, so that user experience of the terminal is consistent with the capability of the terminal, thereby improving user experience thereof.
  • a method for setting up a radio bearer is provided, applied to a network device, where the network device is capable of providing a voice service of a high voice quality codec scheme, and the method includes:
  • the method further includes:
  • the setting up, for the first terminal, a radio bearer used to perform the voice service of the high voice quality codec scheme includes:
  • the network device is the radio access network device; the determining whether, in an end-to-end link in which a voice service is performed between a first terminal and a second terminal, at least one logical functional entity that is capable of providing only a voice service of a low voice quality codec scheme exists between the network device and the second terminal includes:
  • the network device is the first terminal; the determining whether, in an end-to-end link in which a voice service is performed between a first terminal and a second terminal, at least one logical functional entity that is capable of providing only a voice service of a low voice quality codec scheme exists between the network device and the second terminal includes:
  • the network device is a core network device
  • the setting up, for the first terminal, a radio bearer used to perform the voice service of the high voice quality codec scheme includes: sending, to a radio access network device that provides a service to the first terminal, an assignment message used to set up the radio bearer of the voice service of the high voice quality codec scheme.
  • the method further includes: sending, to a radio access network device that provides a service to the second terminal, an assignment message used to set up a radio bearer of the voice service of the low voice quality codec scheme.
  • the codec scheme includes AMR-NB, AMR-WB, enhanced voice services narrowband codec (Enhanced Voice Services Narrowband, EVS-NB for short), enhanced voice services wideband codec (Enhanced Voice Services Wideband, EVS-WB for short), enhanced voice services super wideband codec (Enhanced Voice Services Super Wideband, EVS-SWB for short), and enhanced voice services fullband codec (Enhanced Voice Services Fullband, EVS-FB for short), where if the high voice quality codec scheme is EVS-FB, the low voice quality codec scheme is EVS-SWB, EVS-WB, EVS-NB, AMR-WB, or AMR-NB; if the high voice quality codec scheme is the EVS SWB, the low voice quality codec scheme is EVS-WB, EVS-NB, AMR-WB, or AMR-NB; if the high voice quality codec scheme is the EVS SWB, the low voice quality codec scheme is EVS-WB, EVS-NB, AMR-WB, or AMR-NB;
  • a network device is provided, where the network device is capable of providing a voice service of a high voice quality codec scheme, and the network device includes:
  • the network device further includes a conversion unit, configured to:
  • the setup unit is specifically configured to:
  • the network device is the radio access network device; the determining unit is specifically configured to:
  • the network device is the first terminal; the determining unit is specifically configured to:
  • the network device is a core network device
  • the setup unit is specifically configured to: send, to a radio access network device that provides a service to the first terminal, an assignment message used to set up the radio bearer of the voice service of the high voice quality codec scheme.
  • the setup unit is further configured to: send, to a radio access network device that provides a service to the second terminal, an assignment message used to set up a radio bearer of the voice service of the low voice quality codec scheme.
  • the codec scheme includes AMR-NB, AMR-WB, EVS-NB, EVS-WB, EVS-SWB, and EVS-FB, where if the high voice quality codec scheme is EVS-FB, the low voice quality codec scheme is EVS-SWB, EVS-WB, EVS-NB, AMR-WB, or AMR-NB; if the high voice quality codec scheme is the EVS SWB, the low voice quality codec scheme is EVS-WB, EVS-NB, AMR-WB, or AMR-NB; if the high voice quality codec scheme is EVS-WB, the low voice quality codec scheme is EVS-NB, AMR-WB, or AMR-NB; if the high voice quality codec scheme is EVS-NB, the low voice quality codec scheme is AMR-WB or AMR-NB; if the high voice quality codec scheme is EVS-NB, the low voice quality codec scheme is AMR-WB or AMR-NB;
  • a network device is provided, where the network device is capable of providing a voice service of a high voice quality codec scheme, and the network device includes:
  • the network device further includes: a first receiver, configured to receive voice data; where the processor is further configured to perform down-sampling conversion or spread spectrum conversion on the voice data received by the receiver; and a first transmitter, configured to send voice data obtained by means of the conversion by the processor.
  • the processor is specifically configured to:
  • the network device is the radio access network device; the network device further includes: a second receiver, configured to receive a control-plane message; and a second transmitter, configured to send a control-plane message; the processor is specifically configured to:
  • the network device is the first terminal; the network device further includes: a second receiver, configured to receive a control-plane message; the processor is specifically configured to:
  • the network device is a core network device; the network device further includes: a second transmitter, configured to send a control-plane message; and the processor is specifically configured to: send, by using the second transmitter to a radio access network device that provides a service to the first terminal, an assignment message used to set up the radio bearer of the voice service of the high voice quality codec scheme.
  • the processor is further configured to: send, by using the second transmitter to a radio access network device that provides a service to the second terminal, an assignment message used to set up a radio bearer of the voice service of the low voice quality codec scheme.
  • the codec scheme includes AMR-NB, AMR-WB, EVS-NB, EVS-WB, EVS-SWB, and EVS-FB, where if the high voice quality codec scheme is EVS-FB, the low voice quality codec scheme is EVS-SWB, EVS-WB, EVS-NB, AMR-WB, or AMR-NB; if the high voice quality codec scheme is the EVS SWB, the low voice quality codec scheme is EVS-WB, EVS-NB, AMR-WB, or AMR-NB; if the high voice quality codec scheme is EVS-WB, the low voice quality codec scheme is EVS-NB, AMR-WB, or AMR-NB; if the high voice quality codec scheme is EVS-NB, the low voice quality codec scheme is AMR-WB or AMR-NB; if the high voice quality codec scheme is EVS-NB, the low voice quality codec scheme is AMR-WB or AMR-NB;
  • the network device is capable of providing a voice service of a high voice quality codec scheme; it is determined whether, in an end-to-end link in which a voice service is performed between a first terminal and a second terminal, at least one logical functional entity that is capable of providing only a voice service of a low voice quality codec scheme exists between the network device and the second terminal, where all logical functional entities, in the link, between the network device and the first terminal are capable of providing the voice service of the high voice quality codec scheme; and if at least one logical functional entity that is capable of providing only the voice service of the low voice quality codec scheme exists, in the link, between the network device and the second terminal, a radio bearer used to perform the voice service of the high voice quality codec scheme is set up for the first terminal.
  • the radio bearer set up by the network device for the first terminal is a radio bearer for performing the voice service of the high voice quality codec scheme and is not restricted by a service capability of a logical functional entity between the network device and the second terminal.
  • the present invention implements that a user on a side of a terminal that is capable of providing the voice service of a high-quality codec scheme can experience a high-definition voice service, so that user experience of the terminal is consistent with a capability of the terminal, thereby improving user experience.
  • a procedure for setting up a voice service specifically includes:
  • a control-plane radio bearer is set up between the terminal A and the radio access network A; and when the core network device receives the call setup signaling that is sent by the terminal A and that is forwarded by the radio access network device A, a control-plane land bearer is set up between the terminal A and a core network.
  • the identifier of the terminal B may be a mobile subscriber integrated service digital network (Mobile Subscriber Integrated Service Digital Network, MS ISDN for short) number of the terminal B.
  • MS ISDN Mobile Subscriber Integrated Service Digital Network
  • the identifier of the terminal may also be other information, as long as the terminal can be identified uniquely on a network, which is not limited herein.
  • the core network device pages the terminal B according to the identifier of the terminal B.
  • a process of paging the terminal B by the core network device may be implemented according to an actual requirement, which is not limited herein, as long as the terminal B can be reached by paging.
  • the core network device receives a paging response message of the terminal B by using a radio access network device B.
  • the core network device When the core network device receives the paging response message, it indicates that the paging the terminal B is successful.
  • the core network device separately sets up, for the terminal A and the terminal B, a user-plane land bearer and a user-plane radio bearer of a voice service.
  • the user-plane land bearer is a user-plane connection between the core network device and the radio access network device.
  • the user-plane radio bearer is a user-plane connection between the radio access network device and the terminal.
  • solutions for separately setting up, by the core network device for the terminal A and the terminal B, a voice service radio bearer may include at least the following two solutions:
  • a first solution is as follows: The core network device separately sets up, for the terminal A and the terminal B according to a voice service codec capability of the terminal A, a voice service codec capability of the radio access network device A, a voice service codec capability of the terminal B, a voice service codec capability of the radio access network device B, and a voice service codec capability configured on the core network device itself, a voice service radio bearer corresponding to a voice service codec capability that is the lowest among the five.
  • scenario 1 it is assumed that the terminal A and the radio access network device A are capable of providing only an AMR-NB voice service, that the terminal B and the radio access network device B are capable of providing AMR-WB and AMR-NB voice services, and that the core network device is configured to provide the AMR-NB and AMR-WB voice services.
  • the terminal A and the radio access network device A are capable of providing the AMR-WB and AMR-NB voice services, that the terminal B and the radio access network device B provide only the AMR-NB voice service, and that the core network device is configured to provide the AMR-NB and AMR-WB voice services.
  • the AMR-NB voice service is provided by a capability that is the lowest among the five, that is, the voice service codec capability of the terminal A, the voice service codec capability of the radio access network device A, the voice service codec capability of the terminal B, the voice service codec capability of the radio access network device B, and the voice service codec capability configured on the core network device itself, and therefore, the core network separately sets up, for the terminal A and the terminal B, a land bearer and a radio bearer of the AMR-NB voice service.
  • setting up, by the core network device for the terminal A, the land bearer and the radio bearer of the AMR-NB voice service specifically includes the following step 1 to step 5:
  • a second solution includes S1051 to S1053.
  • the core network device sets up, for the terminal A according to a highest voice service codec capability of the terminal A, the voice service codec capability of the radio access network device A, and the voice service codec capability configured on the core network device itself, a land bearer and a radio bearer of a voice service corresponding to a capability that is the lowest among the three.
  • the foregoing scenario 1 is used as an example.
  • the voice service codec capability of the terminal A is the lowest; therefore, the core network sets up, for the terminal A, the land bearer and the radio bearer of the AMR-NB voice service.
  • the foregoing scenario 2 is used as an example.
  • the voice service codec capabilities of the terminal A, the radio access network device A, and the core network device are consistent, all capable of providing the AMR-WB voice service, and therefore, the core network sets up, for the terminal A, a radio bearer of the AMR-WB voice service.
  • the core network device sets up, for the terminal B according to the voice service codec capability of the terminal B, the capability of the radio access network device B, the voice service codec capability configured on the core network device itself, and a type of the radio bearer that is of the voice service and that is set up for the terminal A, a land bearer and a radio bearer of a voice service corresponding to a capability that is the lowest among the four.
  • the scenario 1 in S1051 is used as an example.
  • the core network sets up, for the terminal A, the land bearer and the radio bearer of the AMR-NB voice service, the terminal B and the radio access network device B are capable of providing the AMR-WB and AMR-WB voice services, and the core network device is capable of providing the AMR-WB and AMR-WB voice services.
  • a capability of the land bearer and the radio bearer that are of the AMR-NB voice service and are set up by the core network for the terminal A is the lowest, and therefore, the core network device sets up, for the terminal B, the land bearer and the radio bearer of the AMR-NB voice service.
  • the scenario 2 in S1051 is used as an example.
  • the core network sets up, for the terminal A, a land bearer and the radio bearer of the AMR-WB voice service, the terminal B and the radio access network device B are capable of providing AMR-NB, and the core network device is capable of providing the AMR-WB and AMR-WB voice services.
  • the terminal B and the radio access network device B are of the lowest capability, and therefore, the core network sets up, for the terminal B, the land bearer and the radio bearer of the AMR-NB voice service.
  • the core network device determines whether a type of the land bearer and the radio bearer that are set up in S1052 is consistent with that of the land bearer and the radio bearer that are set up in S1051.
  • step S105 is ended. If the type of the land bearer and the radio bearer that are set up in S1052 is inconsistent with that of the land bearer and the radio bearer that are set up in S1051, S1054 is executed.
  • step S105 is ended.
  • the foregoing scenario 2 is used as an example.
  • the type of the land bearer and the radio bearer that are set up in S1052 is inconsistent with that of the land bearer and the radio bearer that are set up in S1051, S1054 is executed.
  • the core network device modifies the type of the land bearer and the radio bearer of the terminal A to be consistent with that of the land bearer and the radio bearer of the terminal B.
  • a process of modifying the radio bearer is similar to the process of setting up the land bearer and the radio bearer, and details are not described herein again.
  • the core network device receives a service request initiated by a terminal and sets up a user-plane land bearer between the core network device and the terminal.
  • the terminal A begins to perform a voice service with the terminal B hereto, that is, beginning a call.
  • both ends generate AMR-NB voice signals and send the AMR-NB voice signals to the peer end thereof.
  • Embodiment 1 of the present invention provides a method for setting up a radio bearer, applied to a network device, where the network device is capable of providing a voice service of a high voice quality codec scheme.
  • the being capable of providing a voice service of a high voice quality codec scheme means that a voice service codec capability of the device is configured as the high voice quality codec scheme, and that the function is enabled.
  • the enabling of the function may be controlled by using a switch or a license.
  • the method may include the following steps:
  • All logical functional entities, in the link, between the network device and the first terminal are capable of providing the voice service of the high voice quality codec scheme.
  • the being capable of providing a voice service of a low voice quality codec scheme means that a voice service codec capability of the device is the low voice quality codec scheme; or, the being capable of providing a voice service of a low voice quality codec scheme means that a voice service codec capability of the device is configured as the high voice quality codec scheme and that the function is disabled.
  • the disabling of the function may be controlled by using a switch or a license.
  • the network device when the network device is the first terminal, the network device may be a calling terminal, or may be a called terminal, which is not limited in the present invention.
  • the network device may be a radio access network device or a core network device providing a service for the first terminal; or, the network device is the first terminal.
  • the logical functional entity refers to a collection of at least one physical network element that supports a voice service function.
  • the logical functional entity may be a single physical network element, or may be multiple physical network elements, which is not limited in the present invention.
  • the network device when the network device is the first terminal, the network device may be a mobile terminal, or may be a fixed terminal, which is not limited in the present invention, either.
  • a specific process of the determining, by the network device, whether, in an end-to-end link in which a voice service is performed between a first terminal and a second terminal, at least one logical functional entity that is capable of providing only a voice service of a low voice quality codec scheme exists between the network device and the second terminal is different and may specifically include but is not limited to the following three solutions: Solution 1: The network device is the core network device.
  • the core network device may perform determining by executing S201 after the core network device receives a voice service codec capability of each logical functional entity reported by each logical functional entity itself.
  • a process of receiving, by the core network device, the voice service codec capability of each logical functional entity reported by each logical functional entity itself is not limited in the present invention and may be set according to an actual requirement.
  • the voice service codec capability of each logical functional entity on a network may also be preconfigured on the core network device, and the core network device directly reads the voice service codec capability of each logical functional entity to perform determining by executing S201.
  • Solution 2 The network device is the radio access network device.
  • the determining whether, in an end-to-end link in which a voice service is performed between a first terminal and a second terminal, at least one logical functional entity that is capable of providing only a voice service of a low voice quality codec scheme exists between the network device and the second terminal may include: receiving an assignment message that is sent by the core network device and that is used to set up a voice service radio bearer, where if the assignment message instructs to set up a radio bearer of the low voice quality codec scheme, at least one logical functional entity that is capable of providing only the low voice quality codec scheme exists, in the link, between the core network device and the second terminal.
  • a type of the radio bearer that the assignment message sent by the core network device instructs to set up depends on a service capability that is the lowest in service capabilities of logical functional entities in the link. Therefore, if the assignment message instructs to set up the radio bearer of the low voice quality codec scheme, at least one logical functional entity that is capable of providing only the voice service of the low voice quality codec scheme exists, in the link, between the core network device and the second terminal, and a voice service codec capability of the radio access network device itself is the high voice quality codec scheme. Therefore, at least one logical functional entity that is capable of providing only the voice service of the low voice quality codec scheme exists, in the link, between the radio access network device and the second terminal.
  • a voice service codec capability of each logical functional entity on a network may also be preconfigured on the radio access network device, and the radio access network device directly reads the voice service codec capability of each logical functional entity to perform determining by executing S201.
  • Solution 3 The network device is the first terminal.
  • the determining whether, in an end-to-end link in which a voice service is performed between a first terminal and a second terminal, at least one logical functional entity that is capable of providing only a voice service of a low voice quality codec scheme exists between the network device and the second terminal may include: receiving an instruction message that is sent by the radio access network device and that is used to configure a protocol layer, where if the instruction message instructs to configure a protocol layer for low voice quality, at least one logical functional entity that is capable of providing only the voice service of the low voice quality codec scheme exists, in the link, between the network device and the second terminal.
  • a service type indicated in the instruction message sent by the radio access network device to the terminal is consistent with a type of a radio bearer that an assignment message sent by the core network device instructs to set up and depends on a service capability that is the lowest in service capabilities of logical functional entities in the link. Therefore, if the instruction message instructs to configure the protocol layer for low voice quality, at least one logical functional entity that is capable of providing only the voice service of the low voice quality codec scheme exists, in the link, between the radio access network device and the second terminal, and a voice service codec capability of the first terminal itself is the high voice quality codec scheme. Therefore, at least one logical functional entity that is capable of providing only the voice service of the low voice quality codec scheme exists, in the link, between the first terminal and the second terminal.
  • a voice service codec capability of each logical functional entity on a network may also be preconfigured on the radio access network device, and the radio access network device directly reads the voice service codec capability of each logical functional entity to perform determining by executing S201.
  • a codec scheme in all embodiments of the present invention may include but is not limited to the following manners (voice quality of a voice service provided by each codec scheme improves sequentially): AMR-NB, AMR-WB, EVS-NB, EVS-WB, EVS-SWB, and EVS-FB. Therefore, when a type of the high voice quality codec scheme is different, a definition of the low voice quality codec scheme may be different, which includes:
  • codec schemes are not limitations to a codec scheme in a voice service mentioned in the present invention.
  • a type of a high voice quality codec scheme and a type of a corresponding low voice quality codec scheme thereof may be set according to an actual requirement, and no specific limitation is set in the present invention. Any radio bearer set up by using a solution of the present invention shall fall within the protection scope of the present invention.
  • a radio bearer for performing a voice service of high voice quality may be set up for the first terminal and the second terminal.
  • the network device sets up, for the first terminal, a radio bearer used to perform a voice service of a high voice quality codec scheme.
  • the setting up, for the first terminal, a radio bearer used to perform a voice service of a high voice quality codec scheme may include but is not limited to the following two cases:
  • a first case is as follows: If no radio bearer has been set up for the first terminal, set up, for the first terminal, a new radio bearer used to perform the voice service of the high voice quality codec scheme.
  • the first case is a case in which the radio bearer is set up for the first terminal for the first time.
  • a second case is as follows: If a radio bearer used to perform the voice service of the high voice quality codec scheme has been set up for the first terminal, the radio bearer of the first terminal is kept unchanged.
  • the second case is a case in which, after a radio bearer has been set up for the first terminal for the first time, a type of the radio bearer set up for the first terminal needs to be modified due to a performance limitation of a system and an assignment is performed for a second time (that is, a late assignment).
  • a radio bearer used to perform a voice service of a high voice quality codec scheme is also different and may include the following three cases:
  • a first case is that the network device is the core network device.
  • the setting up, for the first terminal, a radio bearer used to perform a voice service of a high voice quality codec scheme may include: sending, to a radio access network device that provides a service to the first terminal, an assignment message used to set up the radio bearer of the voice service of the high voice quality codec scheme.
  • the network device is the core network device, and after the setting up, for the first terminal, a radio bearer used to perform a voice service of a high voice quality codec scheme, the method may further include: sending, to a radio access network device that provides a service to the second terminal, an assignment message used to set up a radio bearer of the voice service of the low voice quality codec scheme.
  • a second case is that the network device is the radio access network device.
  • the setting up, for the first terminal, a radio bearer used to perform a voice service of a high voice quality codec scheme may include: setting up, for the first terminal, the radio bearer used to perform the voice service of the high voice quality codec scheme, and sending a first instruction message to the first terminal, where the first instruction message is used to instruct the first terminal to configure a protocol layer for high voice quality.
  • a third case is that the network device is the first terminal.
  • the setting up, for the first terminal, a radio bearer used to perform a voice service of a high voice quality codec scheme may include: configuring, by the first terminal, a protocol layer for high voice quality.
  • the radio bearer set up by the network device for the first terminal is different from a service capability of a logical functional entity, in the link, between the network device and a second mobile station. It is equivalent that an isolation and conversion function is configured on the network device, and a control-plane message is isolated by using the function, thereby achieving an objective that types of radio bearers set up on two sides of the network device are different.
  • the method may further include:
  • the network device After converting a type of the received voice data into a type that is suitable for transmission by using a radio bearer that is about to transmit the voice data, the network device sends converted voice data. It is equivalent that the isolation and conversion function is configured on the network device, and user-plane data is converted by using the function, thereby achieving an objective of converting different types of user data on the two sides of the network device.
  • the method for setting up a radio bearer may be applied to various types of communications standards, where the various types of communications standards may include but are not limited to any one of the following standards: the Global System for Mobile Communications (Global System for Mobile Communication, GSM for short), the Wideband Code Division Multiple Access (Wideband Code Division Multiple Access, WCDMA for short) system, the Time Division-Synchronous Code Division Multiple Access (Time Division-Synchronous Code Division Multiple Access, TD-SCDMA for short) system, the Code Division Multiple Access (Code Division Multiple Access, CDMA for short) system, and Long Term Evolution (Long Term Evolution, LTE for short).
  • GSM Global System for Mobile Communication
  • WCDMA Wideband Code Division Multiple Access
  • WCDMA Wideband Code Division Multiple Access
  • TD-SCDMA Time Division-Synchronous Code Division Multiple Access
  • CDMA Code Division Multiple Access
  • LTE Long Term Evolution
  • radio access network device and the core network device that are described in all the embodiments of the present invention are different.
  • the radio access network device is a radio network controller (Radio Network Controller, RNC for short), and the core network device is a mobile switching center (Mobile Switching Center, MSC for short).
  • RNC Radio Network Controller
  • MSC Mobile Switching Center
  • the radio access network device is a base station controller (Base Station Controller, BSC for short), and the core network device is an MSC.
  • BSC Base Station Controller
  • the radio access network device is an evolved NodeB (Evolved Node B, eNodeB for short), and the core network device is a mobility management entity (Mobility Management Entity, MME for short).
  • Evolved Node B evolved Node B
  • MME Mobility Management Entity
  • the method for setting up a radio bearer provided in this embodiment of the present invention is applied to a network device, where the network device is capable of providing a voice service of a high voice quality codec scheme; it is determined whether, in an end-to-end link in which a voice service is performed between a first terminal and a second terminal, at least one logical functional entity that is capable of providing only a voice service of a low voice quality codec scheme exists between the network device and the second terminal, where all logical functional entities, in the link, between the network device and the first terminal are capable of providing the voice service of the high voice quality codec scheme; and if at least one logical functional entity that is capable of providing only the voice service of the low voice quality codec scheme exists, in the link, between the network device and the second terminal, a radio bearer used to perform the voice service of the high voice quality codec scheme is set up for the first terminal.
  • the radio bearer set up by the network device for the first terminal is a radio bearer for performing the voice service of the high voice quality codec scheme and is not restricted by a service capability of a logical functional entity between the network device and the second terminal.
  • the present invention implements that a user on a side of a terminal that is capable of providing the voice service of a high-quality codec scheme can experience a high-definition voice service, so that user experience of the terminal is consistent with a capability of the terminal, thereby improving user experience.
  • Embodiment 2 of the present invention provides another method for setting up a radio bearer.
  • a process of interaction between a core network device, a radio access network device, and a terminal and a voice service procedure in which a terminal A (a calling terminal) calls a terminal B (a called terminal) are used as an example to describe in detail the method for setting up a radio bearer described in Embodiment 1.
  • a voice service codec capability of each physical network element on a network and whether an isolation and conversion function is configured (whether the method for setting up a radio bearer provided in the present invention is executed) are shown in Table 1.
  • Table 1 Network element name Voice service codec capability Whether an isolation and conversion function is configured Terminal A AMR-NB Not limited Radio access network A AMR-NB Not limited Core network device AMR-WB Not configured AMR-NB Not limited Radio access network B AMR-WB Configured Terminal B AMR-WB Not limited
  • the method may include the following steps:
  • the AMR-NB assignment message is used to set up a radio bearer for performing an AMR-NB voice service.
  • the radio access network device A sets up an AMR-NB radio bearer for the terminal A and instructs the terminal A to configure an AMR-NB protocol layer.
  • the AMR-NB radio bearer is set up for the terminal A in S304.
  • the AMR-NB radio bearer is set up for the terminal A according to an instruction of the core network device.
  • the radio access network device A If the radio access network device A has configured the isolation and conversion function, because the voice service codec capability of the core network device A is AMR-NB, the radio access network device A still sets up the AMR-NB radio bearer for the terminal A.
  • the terminal A configures the AMR-NB protocol layer according to an instruction of the radio access network device A.
  • the AMR-NB protocol layer is configured in S305.
  • the AMR-NB protocol layer is configured according to the instruction of the radio access network device A.
  • the terminal A If the terminal A has configured the isolation and conversion function, because the terminal A is capable of providing only the AMR-NB voice service, the terminal A still configures the AMR-NB protocol layer.
  • the terminal A feeds back a response message to the core network device.
  • the core network device pages the terminal B according to the identifier of the terminal B.
  • the core network device sends an AMR-NB assignment message to the radio access network device B according to the voice service codec capability of the terminal B, the capability of the radio access network device B, the voice service codec capability configured on the core network device itself, and a type of the radio bearer set up for the terminal A.
  • the AMR-NB assignment message is used to set up a radio bearer for performing the AMR-NB voice service.
  • the radio access network device B sets up an AMR-WB radio bearer for the terminal B and instructs the terminal B to configure an AMR-WB protocol layer.
  • the radio access network device B determines, according to the received assignment message, that at least one logical functional entity that is capable of providing only the AMR-NB voice service exists, in a link, between the radio access network B and the terminal A, and all logical functional entities, in the link, between the radio access network device B and the terminal B are capable of providing an AMR-WB voice service, sets up the AMR-WB radio bearer is set up for the terminal B and instructs the terminal B is instructed to configure the AMR-WB protocol layer.
  • the terminal B configures the AMR-WB protocol layer according to an instruction of the radio access network device B.
  • the AMR-WB protocol layer is configured in S310.
  • the AMR-WB protocol layer is configured according to the instruction of the radio access network device B.
  • the terminal B If the terminal B has configured the isolation and conversion function, because the terminal B is capable of providing the AMR-WB voice service, the terminal B still configures the AMR-WB protocol layer.
  • the terminal B feeds back a response message to the core network device.
  • a process of a voice call may be performed, and the method may further include:
  • the voice service between the terminal A and the terminal B is complete hereto.
  • a voice service codec capability of each physical network element on a network and whether an isolation and conversion function is configured are shown in Table 2.
  • Table 2 Network element name Voice service codec capability Whether an isolation and conversion function is configured Terminal A AMR-WB Not limited Radio access network A AMR-WB Configured Core network device AMR-NB Not limited Radio access network B AMR-NB Not limited Terminal B AMR-NB Not limited
  • a process of performing a voice service between the terminal A and the terminal B is similar to that from S301 to S314. The only difference is that AMR-WB is on the side of the terminal A, and that AMR-NB is on the side of the terminal B, and details are not described herein again.
  • a voice service codec capability of each physical network element on a network and whether an isolation and conversion function is configured are shown in Table 3.
  • Table 3 Network element name Voice service codec capability Whether an isolation and conversion function is configured Terminal A AMR-WB Not limited Radio access network A AMR-WB Configured Core network device AMR-WB Not configured Radio access network B AMR-NB Not limited Terminal B AMR-NB Not limited
  • the method may include:
  • the AMR-WB assignment message is used to set up a radio bearer for performing an AMR-WB voice service.
  • the radio access network device A sets up an AMR-WB radio bearer for the terminal A and instructs the terminal A to configure an AMR-WB protocol layer.
  • the terminal A configures the AMR-WB protocol layer according to an instruction of the radio access network device A.
  • the terminal A feeds back a response message to the core network device.
  • the core network device pages the terminal B according to the identifier of the terminal B.
  • the core network device sends an AMR-NB assignment message to the radio access network device B according to the voice service codec capability of the terminal B, the capability of the radio access network device B, the voice service codec capability configured on the core network device itself, and a type of the radio bearer set up for the terminal A.
  • the radio access network device B sets up an AMR-NB radio bearer for the terminal B and instructs the terminal B to configure an AMR-NB protocol layer.
  • the terminal B configures the AMR-NB protocol layer according to an instruction of the radio access network device B.
  • the terminal B feeds back a response message to the core network device.
  • the core network device determines that service types assigned for two ends are inconsistent and sends an AMR-NB assignment message to the radio access network device A.
  • the radio access network device A keeps the radio bearer of the terminal A unchanged.
  • the radio access network device A determines, according to the received assignment message, that at least one logical functional entity that is capable of providing only an AMR-NB voice service exists, in a link, between the radio access network A and the terminal B, and all logical functional entities, in the link, between the radio access network device A and the terminal A are capable of providing the AMR-WB voice service, the AMR-WB radio bearer of the terminal A is kept unchanged.
  • the radio access network device A feeds back a response message to the core network device.
  • a process of a voice call may be performed, and the method may further include:
  • the voice service between the terminal A and the terminal B is complete hereto.
  • the method for setting up a radio bearer it is determined whether, in an end-to-end link in which a voice service is performed between a first terminal and a second terminal, at least one logical functional entity that is capable of providing only a voice service of a low voice quality codec scheme exists between the network device and the second terminal, where all logical functional entities, in the link, between the network device and the first terminal are capable of providing a voice service of a high voice quality codec scheme; if at least one logical functional entity that is capable of providing only the voice service of the low voice quality codec scheme exists, in the link, between the network device and the second terminal, a radio bearer used to perform the voice service of the high voice quality codec scheme is set up for the first terminal; and voice data is received and converted before sending.
  • the radio bearer set up by the network device for the first terminal is a radio bearer for performing the voice service of the high voice quality codec scheme and is not restricted by a service capability of a logical functional entity between the network device and the second terminal.
  • the present invention implements that a user on a side of a terminal that is capable of providing a high-quality codec scheme can experience a high-definition voice service, so that user experience of the terminal is consistent with a capability of the terminal, thereby improving user experience.
  • Embodiment 3 of the present invention provides yet another method for setting up a radio bearer.
  • a process of interaction between a core network device, a radio access network device, and a terminal and a voice service procedure in which a terminal A (a calling terminal) calls a terminal B (a called terminal) are used as an example to describe in detail the method for setting up a radio bearer described in Embodiment 1.
  • a voice service codec capability of each physical network element on a network and whether an isolation and conversion function is configured (whether the method for setting up a radio bearer provided in the present invention is executed) are shown in Table 4.
  • Table 4 Network element name Voice service codec capability Whether an isolation and conversion function is configured Terminal A AMR-NB Not limited Radio access network A AMR-NB Not limited Core network device AMR-WB Configured Radio access network B AMR-WB Not limited Terminal B AMR-WB Not limited
  • the method may include:
  • the core network device determines, according to a voice service codec capability of each logical functional entity, that at least one logical functional entity that is capable of providing only an AMR-NB voice service exists, in a link, between the core network device and the terminal A, and all logical functional entities, in the link, between the core network device and the terminal B are capable of providing an AMR-WB voice service, an AMR-WB radio bearer is set up for the terminal B and an AMR-NB radio bearer is set up for the terminal A.
  • the radio access network device A sets up an AMR-NB radio bearer for the terminal A and instructs the terminal A to configure an AMR-NB protocol layer.
  • the terminal A configures the AMR-NB protocol layer according to an instruction of the radio access network device A.
  • the terminal A feeds back a response message to the core network device.
  • the radio access network device B sets up an AMR-WB radio bearer for the terminal B and instructs the terminal B to configure an AMR-WB protocol layer.
  • the terminal B configures the AMR-WB protocol layer according to an instruction of the radio access network device B.
  • the terminal B feeds back a response message to the core network device.
  • a process of a voice call may be performed, and the method may further include:
  • the voice service between the terminal A and the terminal B is complete hereto.
  • a voice service codec capability of each physical network element on a network and whether an isolation and conversion function is configured are shown in Table 5.
  • Table 5 Network element name Voice service codec capability Whether an isolation and conversion function is configured Terminal A AMR-WB Not limited Radio access network A AMR-WB Not limited Core network device AMR-WB Configured Radio access network B AMR-NB Not limited Terminal B AMR-NB Not limited
  • a process of performing a voice service between the terminal A and the terminal B is similar to that from S501 to S514. The only difference is that AMR-WB is on the side of the terminal A, and that AMR-NB is on the side of the terminal B, and details are not described herein again.
  • the method for setting up a radio bearer it is determined whether, in an end-to-end link in which a voice service is performed between a first terminal and a second terminal, at least one logical functional entity that is capable of providing only a voice service of a low voice quality codec scheme exists between the network device and the second terminal, where all logical functional entities, in the link, between the network device and the first terminal are capable of providing a voice service of a high voice quality codec scheme; if at least one logical functional entity that is capable of providing only the voice service of the low voice quality codec scheme exists, in the link, between the network device and the second terminal, a radio bearer used to perform the voice service of the high voice quality codec scheme is set up for the first terminal; and voice data is received and converted before sending.
  • the radio bearer set up by the network device for the first terminal is a radio bearer for performing the voice service of the high voice quality codec scheme and is not restricted by a service capability of a logical functional entity between the network device and the second terminal.
  • the present invention implements that a user on a side of a terminal that is capable of providing the voice service of a high-quality codec scheme can experience a high-definition voice service, so that user experience of the terminal is consistent with a capability of the terminal, thereby improving user experience.
  • Embodiment 4 of the present invention provides yet another method for setting up a radio bearer.
  • a process of interaction between a core network device, a radio access network device, and a terminal and a voice service procedure in which a terminal A (a calling terminal) calls a terminal B (a called terminal) are used as an example to describe in detail the method for setting up a connection and a radio bearer described in the foregoing embodiments.
  • a voice service codec capability of each physical network element on a network and whether an isolation and conversion function is configured (whether the method for setting up a radio bearer provided in the present invention is executed) are shown in Table 6 or Table 7.
  • Table 6 Network element name Voice service codec capability Whether an isolation and conversion function is configured Terminal A AMR-WB Configured Radio access network A AMR-NB Not limited AMR-WB Not configured Core network device AMR-NB Not limited Radio access network B AMR-NB or AMR-WB Not limited Terminal B AMR-NB Not limited Table 7
  • the method may include:
  • the terminal A determines, according to an instruction of the radio access network device, that at least one logical functional entity that is capable of providing only an AMR-NB voice service exists, in a link, between the terminal A and the terminal B, and all logical functional entities, in the link, between a network device (the terminal A) and the terminal A are capable of providing an AMR-WB voice service, an AMR-WB radio bearer is set up for the terminal A, that is, the terminal A configures the AMR-WB protocol layer.
  • the terminal A feeds back a response message to the core network device.
  • the core network device pages a mobile station B according to an identifier of the mobile station B.
  • the core network device sends an AMR-NB assignment message to the radio access network device B according to the voice service codec capability of the terminal B, the capability of the radio access network device B, the voice service codec capability configured on the core network device itself, and a type of the radio bearer set up for the terminal A.
  • the radio access network device B sets up an AMR-NB radio bearer for the terminal B and instructs the terminal B to configure an AMR-NB protocol layer.
  • the terminal B configures the AMR-NB protocol layer according to an instruction of the radio access network device B.
  • the terminal B feeds back a response message to the core network device.
  • a voice service codec capability of each physical network element on a network and whether an isolation and conversion function is configured are shown in Table 8 or Table 9.
  • Table 8 Network element name Voice service codec capability Whether an isolation and conversion function is configured Terminal A AMR-NB Not limited Radio access network A AMR-NB or AMR-WB Not limited Core network device AMR-NB Not limited Radio access network B AMR-NB Not limited AMR-WB Not configured Terminal B AMR-WB Configured
  • Table 9 Network element name Voice service codec capability Whether an isolation and conversion function is configured Terminal A AMR-NB Not limited Radio access network A AMR-NB or AMR-WB Not limited Core network device AMR-WB Not limited Radio access network B AMR-NB Not limited Terminal B AMR-WB Configured
  • a process of performing a voice service between the terminal A and the terminal B is similar to that from S601 to S611. The only difference is that AMR-NB is on the side of the terminal A, and that AMR-WB is on the side of the terminal B, and details are not described herein again.
  • a voice service codec capability of each physical network element on a network and whether an isolation and conversion function is configured are shown in Table 10.
  • Table 10 Network element name Voice service codec capability Whether an isolation and conversion function is configured Terminal A AMR-WB Configured Radio access network device A AMR-WB Not configured Core network device AMR-WB Not configured Radio access network B AMR-NB or AMR-WB Not limited Terminal B AMR-NB Not limited
  • the method may include:
  • the terminal A determines, according to an instruction of the radio access network device, that at least one logical functional entity that is capable of providing only the AMR-NB voice service exists, in a link, between the terminal A and the terminal B, and all logical functional entities, in the link, between a network device (the terminal A) and the terminal A are capable of providing an AMR-WB voice service, the AMR-WB radio bearer is set up for the terminal A, that is, the terminal A keeps the configuration of the AMR-WB protocol layer unchanged.
  • the terminal A feeds back a response message to the core network device.
  • a process of a voice call may be performed.
  • a radio bearer it is determined whether, in an end-to-end link in which a voice service is performed between a first terminal and a second terminal, at least one logical functional entity that is capable of providing only a voice service of a low voice quality codec scheme exists between the network device and the second terminal, where all logical functional entities, in the link, between the network device and the first terminal are capable of providing a voice service of a high voice quality codec scheme; if a voice service codec capability of at least one logical functional entity that is capable of providing only the voice service of the low voice quality codec scheme exists, in the link, between the network device and the second terminal, a radio bearer used to perform the voice service of the high voice quality codec scheme is set up for the first terminal; and voice data is received and converted before sending.
  • the radio bearer set up by the network device for the first terminal is a radio bearer for performing the voice service of the high voice quality codec scheme and is not restricted by a service capability of a logical functional entity between the network device and the second terminal.
  • the present invention implements that a user on a side of a terminal that is capable of providing the voice service of a high-quality codec scheme can experience a high-definition voice service, so that user experience of the terminal is consistent with a capability of the terminal, thereby improving user experience.
  • Embodiment 5 of the present invention provides a network device 80, where the network device 80 is capable of providing a voice service of a high voice quality codec scheme.
  • the network device 8 may include:
  • the network device 80 may further include a conversion unit 803, configured to:
  • setup unit 802 may be specifically configured to:
  • the network device 80 may be a radio access network device, and the determining unit 801 may be specifically configured to: receive an assignment message that is sent by a core network device and that is used to set up a voice service radio bearer.
  • the assignment message instructs to set up a radio bearer of the low voice quality codec scheme
  • at least one logical functional entity that is capable of providing only the voice service of the low voice quality codec scheme exists, in the link, between the network device and the second terminal.
  • the setup unit 802 may be specifically configured to: set up, for the first terminal, the radio bearer used to perform the voice service of the high voice quality codec scheme, and send an instruction message to the first terminal, where the instruction message is used to instruct the first terminal to configure a protocol layer for high voice quality.
  • the network device 80 may be the first terminal, and the determining unit 801 may be specifically configured to: receive an instruction message that is sent by a radio access network device and that is used to configure a protocol layer.
  • the instruction message instructs to configure a protocol layer for low voice quality
  • at least one logical functional entity that is capable of providing only the voice service of the low voice quality codec scheme exists, in the link, between the network device and the second terminal.
  • the setup unit 802 may be specifically configured to: configure a protocol layer for high voice quality.
  • the network device 80 may be a core network device, and the setup unit 802 may be specifically configured to: send, to a radio access network device that provides a service to the first terminal, an assignment message used to set up the radio bearer of the voice service of the high voice quality codec scheme.
  • the setup unit 802 may be further configured to: send, to a radio access network device that provides a service to the second terminal, an assignment message used to set up a radio bearer of the voice service of the low voice quality codec scheme.
  • the codec scheme includes AMR-NB, AMR-WB, EVS-NB, EVS-WB, EVS-SWB, and EVS-FB.
  • the high voice quality codec scheme is EVS-FB
  • the low voice quality codec scheme is EVS-SWB, EVS-WB, EVS-NB, AMR-WB, or AMR-NB.
  • the high voice quality codec scheme is the EVS SWB
  • the low voice quality codec scheme is EVS-WB, EVS-NB, AMR-WB, or AMR-NB.
  • the high voice quality codec scheme is EVS-WB
  • the low voice quality codec scheme is EVS-NB, AMR-WB, or AMR-NB.
  • the low voice quality codec scheme is AMR-WB or AMR-NB.
  • the low voice quality codec scheme is AMR-NB.
  • the network device 80 it is determined whether, in an end-to-end link in which a voice service is performed between a first terminal and a second terminal, at least one logical functional entity that is capable of providing only a voice service of a low voice quality codec scheme exists between the network device and the second terminal, where all logical functional entities, in the link, between the network device and the first terminal are capable of providing a voice service of a high voice quality codec scheme; and if at least one logical functional entity that is capable of providing only the voice service of the low voice quality codec scheme exists, in the link, between the network device and the second terminal, a radio bearer used to perform the voice service of the high voice quality codec scheme is set up for the first terminal.
  • the radio bearer set up by the network device for the first terminal is a radio bearer for performing the voice service of the high voice quality codec scheme and is not restricted by a service capability of a logical functional entity between the network device and the second terminal.
  • the present invention implements that a user on a side of a terminal that is capable of providing the voice service of a high-quality codec scheme can experience a high-definition voice service, so that user experience of the terminal is consistent with a capability of the terminal, thereby improving user experience.
  • Embodiment 6 of the present invention provides another network device 80, where the network device 80 is capable of providing a voice service of a high voice quality codec scheme.
  • the network device 80 may include: at least one processor 1001, a memory 1002, and at least one communications bus 1003 configured to implement a connection and mutual communication between apparatuses.
  • the communications bus 1003 may be an industry standard architecture (Industry Standard Architecture, ISA for short) bus, a peripheral component interconnect (Peripheral Component, PCI for short) bus, an Extended Industry Standard Architecture (Extended Industry Standard Architecture, EISA for short) bus, or the like.
  • the bus 1003 may be classified into an address bus, a data bus, a control bus, and the like and for ease of denotation, is represented by using one thick line in FIG. 10 ; however, it does not indicate that there is only one bus or only one type of bus.
  • the processor 1001 may be a central processing unit (Central Processing Unit, CPU for short), or an application-specific integrated circuit (Application Specific Integrated Circuit, ASIC for short), or be configured as one or more integrated circuits implementing the embodiments of the present invention.
  • the processor 1001 is configured to execute program code stored in the memory 1002, so as to implement a function of the processor 1001.
  • the processor 1001 is configured to determine whether, in an end-to-end link in which a voice service is performed between a first terminal and a second terminal, at least one logical functional entity that is capable of providing only a voice service of a low voice quality codec scheme exists between the network device and the second terminal, where all logical functional entities, in the link, between the network device and the first terminal are capable of providing the voice service of the high voice quality codec scheme.
  • the processor 1001 is further configured to: if at least one logical functional entity that is capable of providing only the voice service of the low voice quality codec scheme exists, in the link, between the network device and the second terminal, set up, for the first terminal, a radio bearer used to perform the voice service of the high voice quality codec scheme.
  • the network device 80 may further include: a first receiver 1004, configured to receive voice data; and a first transmitter 1005, configured to send voice data.
  • the receiver 1004 may receive voice data of the high voice quality codec scheme.
  • the processor 1001 performs down-sampling conversion to convert the voice data of the high voice quality codec scheme received by the receiver 1004 into voice data of the low voice quality codec scheme.
  • the first transmitter 1005 sends the voice data of the low voice quality codec scheme obtained by means of the conversion by the processor 1001; or, optionally, the receiver 1004 may receive voice data of the low voice quality codec scheme.
  • the processor 1001 performs spread spectrum conversion to convert the voice data of the low voice quality codec scheme received by the receiver 1004 into voice data of the high voice quality codec scheme.
  • the first transmitter 1005 sends the voice data of the high voice quality codec scheme obtained by means of the conversion by the processor 1001.
  • the processor 1001 may be specifically configured to:
  • the network device 80 may further include: a second receiver 1006, configured to receive a control-plane message; and a second transmitter 1007, configured to send a control-plane message.
  • the network device 80 is the radio access network device, and the processor 1001 may be specifically configured to: receive, by using the second receiver 1006, an assignment message that is sent by a core network device and that is used to set up a voice service radio bearer.
  • the assignment message instructs to set up a radio bearer of the low voice quality codec scheme
  • at least one logical functional entity that is capable of providing only the voice service of the low voice quality codec scheme exists, in the link, between the network device and the second terminal.
  • the processor 1001 is configured to: set up, for the first terminal, the radio bearer used to perform the voice service of the high voice quality codec scheme, and send, by using the second transmitter 1007, an instruction message to the first terminal, where the instruction message is used to instruct the first terminal to configure a protocol layer for high voice quality.
  • the network device 80 is the first terminal, and the processor 1001 may be specifically configured to: receive, by using the second receiver 1006, an instruction message that is sent by a radio access network device and that is used to configure a protocol layer.
  • the instruction message instructs to configure a protocol layer for low voice quality
  • at least one logical functional entity that is capable of providing only the voice service of the low voice quality codec scheme exists, in the link, between the network device and the second terminal.
  • the processor 1001 may further be specifically configured to: configure a protocol layer for high voice quality.
  • the network device 80 is a core network device, and the processor 1001 may be specifically configured to: send, by using the second transmitter 1007 to a radio access network device that provides a service to the first terminal, an assignment message used to set up the radio bearer of the voice service of the high voice quality codec scheme.
  • the processor 1001 may be further configured to: send, by using the second transmitter 1007 to a radio access network device that provides a service to the second terminal, an assignment message used to set up a radio bearer of the voice service of the low voice quality codec scheme.
  • the codec scheme includes AMR-NB, AMR-WB, EVS-NB, EVS-WB, EVS-SWB, and EVS-FB.
  • the high voice quality codec scheme is EVS-FB
  • the low voice quality codec scheme is EVS-SWB, EVS-WB, EVS-NB, AMR-WB, or AMR-NB.
  • the high voice quality codec scheme is the EVS SWB
  • the low voice quality codec scheme is EVS-WB, EVS-NB, AMR-WB, or AMR-NB.
  • the high voice quality codec scheme is EVS-WB
  • the low voice quality codec scheme is EVS-NB, AMR-WB, or AMR-NB.
  • the low voice quality codec scheme is AMR-WB or AMR-NB.
  • the low voice quality codec scheme is AMR-NB.
  • the network device 80 it is determined whether, in an end-to-end link in which a voice service is performed between a first terminal and a second terminal, at least one logical functional entity that is capable of providing only a voice service of a low voice quality codec scheme exists between the network device and the second terminal, where all logical functional entities, in the link, between the network device and the first terminal are capable of providing a voice service of a high voice quality codec scheme; and if at least one logical functional entity that is capable of providing only the voice service of the low voice quality codec scheme exists, in the link, between the network device and the second terminal, a radio bearer used to perform the voice service of the high voice quality codec scheme is set up for the first terminal.
  • the radio bearer set up by the network device for the first terminal is a radio bearer for performing the voice service of the high voice quality codec scheme and is not restricted by a service capability of a logical functional entity between the network device and the second terminal.
  • the present invention implements that a user on a side of a terminal that is capable of providing the voice service of a high-quality codec scheme can experience a high-definition voice service, so that user experience of the terminal is consistent with a capability of the terminal, thereby improving user experience.
  • a computer readable medium (or medium) is further provided, including computer readable instructions that, when being executed, are used to perform the following operations: the operations of the methods in the foregoing Embodiment 1 to Embodiment 4 are executed.
  • a computer program product including the foregoing computer readable medium.
  • sequence numbers of the foregoing processes do not mean execution sequences in various embodiments of the present invention.
  • the execution sequences of the processes should be determined according to functions and internal logic of the processes, and should not be construed as any limitation on the implementation processes of the embodiments of the present invention.
  • the disclosed system, apparatus, and method may be implemented in other manners.
  • the described apparatus embodiments are merely exemplary.
  • the unit division is merely logical function division and may be other division in actual implementation.
  • a plurality of units or components may be combined or integrated into another system, or some features may be ignored or not executed.
  • the displayed or discussed mutual couplings or direct couplings or communication connections may be implemented through some interfaces.
  • the indirect couplings or communication connections between the apparatuses or units may be implemented in electronic or other forms.
  • the units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, and may be located in one position, or may be distributed on a plurality of network units. Some or all of the units may be selected according to actual requirements to achieve the objectives of the solutions of the embodiments.
  • functional units in the embodiments of the present invention may be integrated into one processing unit, or each of the units may exist alone physically, or two or more units are integrated into one unit.
  • the integrated unit may be implemented in a form of hardware, or may be implemented in a form of hardware in addition to a software functional unit.
  • the integrated unit may be stored in a computer-readable storage medium.
  • the software functional unit is stored in a storage medium and includes several instructions for instructing a computer device (which may be a personal computer, a server, or a network device) to execute some of the steps of the methods described in the embodiments of the present invention.
  • the foregoing storage medium includes: any medium that can store program code, such as a USB flash drive, a portable hard drive, a read-only memory (Read-Only Memory, ROM), a random access memory (Random Access Memory, RAM), a magnetic disk, or an optical disc.

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Quality & Reliability (AREA)
  • Computational Linguistics (AREA)
  • Health & Medical Sciences (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Human Computer Interaction (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Mobile Radio Communication Systems (AREA)
EP15903806.6A 2015-09-15 2015-09-15 Verfahren und netzwerkvorrichtung zur herstellung eines drahtlosträgers Ceased EP3340664A4 (de)

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KR20200120107A (ko) 2019-04-11 2020-10-21 삼성전자주식회사 확장 현실 서비스에 대해 저지연 통신을 제공하기 위한 방법 및 그 전자 장치
US11699452B2 (en) 2020-12-08 2023-07-11 T-Mobile Usa, Inc. Machine learning-based audio codec switching
US11425259B2 (en) * 2020-12-08 2022-08-23 T-Mobile Usa, Inc. Machine learning-based audio codec switching

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WO2003003770A1 (en) * 2001-06-26 2003-01-09 Nokia Corporation Method for transcoding audio signals, transcoder, network element, wireless communications network and communications system
WO2003092312A1 (en) * 2002-04-24 2003-11-06 Telefonaktiebolaget Lm Ericsson (Publ) Bypassing transcoding operations in a communication network
US7619995B1 (en) * 2003-07-18 2009-11-17 Nortel Networks Limited Transcoders and mixers for voice-over-IP conferencing
CN100589506C (zh) * 2006-03-01 2010-02-10 中兴通讯股份有限公司 一种宽窄带网络彩铃共享系统及方法
RU2449386C2 (ru) * 2007-11-02 2012-04-27 Хуавэй Текнолоджиз Ко., Лтд. Способ и устройство для аудиодекодирования
CN101667888B (zh) * 2009-09-16 2013-09-11 中兴通讯股份有限公司 自适应多速率调整方法及装置
EP2640052B1 (de) * 2010-11-10 2019-07-24 Panasonic Intellectual Property Corporation of America Endgerät und verfahren zur auswahl eines codierungsmodus dafür
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US20180206087A1 (en) 2018-07-19
US10638276B2 (en) 2020-04-28
EP3340664A4 (de) 2018-06-27
WO2017045115A1 (zh) 2017-03-23
CN107079272A (zh) 2017-08-18

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